docs: def get_all_existing(self, server_group):
          """Finds all existing scaling policies for an application
  
          Returns:
              scalingpolicies (list): List of all existing scaling policies for the application
          """
          self.log.info("Checking for existing scaling policy")
          url = "{0}/applications/{1}/clusters/{2}/{1}/serverGroups".format(API_URL, self.app, self.env)
          response = requests.get(url, verify=GATE_CA_BUNDLE, cert=GATE_CLIENT_CERT)
          assert response.ok, "Error looking for existing Autoscaling Policy for {0}: {1}".format(self.app, response.text)
  
          scalingpolicies = []
          for servergroup in response.json():
              if servergroup['scalingPolicies'] and servergroup['asg']['autoScalingGroupName'] == server_group:
                  self.log.info("Found policies on %s", server_group)
                  scalingpolicies.append(servergroup['scalingPolicies'])
          self.log.debug("Scaling policies: %s", scalingpolicies)
          return scalingpolicies